US20020168906A1 - Net-like planar polymer assembly - Google Patents

Net-like planar polymer assembly Download PDF

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Publication number
US20020168906A1
US20020168906A1 US10/185,362 US18536202A US2002168906A1 US 20020168906 A1 US20020168906 A1 US 20020168906A1 US 18536202 A US18536202 A US 18536202A US 2002168906 A1 US2002168906 A1 US 2002168906A1
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United States
Prior art keywords
cellulose
planar assembly
net
polymer
molded
Prior art date
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Abandoned
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US10/185,362
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English (en)
Inventor
Christian Schlossnikl
Heinrich Firgo
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Lenzing AG
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Lenzing AG
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Publication date
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Priority to US10/185,362 priority Critical patent/US20020168906A1/en
Publication of US20020168906A1 publication Critical patent/US20020168906A1/en
Abandoned legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/015—Natural yarns or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/013—Regenerated cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • D04H3/045—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles for net manufacturing
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2028/00—Nets or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/164—Including a preformed film, foil, or sheet

Definitions

  • the present invention relates to a planar assembly made of a polymer, which planar assembly includes threads interconnected in a net-like manner via connection sites while forming meshes, wherein the threads at least partially are fused together on the connection sites.
  • the present invention furthermore, relates to a process for producing such a planar assembly.
  • thermoplastics can be processed to webs of net- or fabric-like structures (General Survey in “Kunststoffe”, Vol. 52, pp. 492-494, 1962 and “KunststoffExtrudertechnik”, 2nd Edition, pp. 446-450, 1963, Carl Hanser Verlag Kunststoff).
  • Multihole systems in circular or flat arrangements are used as extrusion tools or extrusion dies, each die hole being composed of two half-holes located in two distinct structural elements which are relatively moved in close contact.
  • That tool may be regarded as a mixture of a multihole head and a film-blowing extrusion head of zero gap width and a rotating annular mouth piece and optionally also a counter-rotating mandrel.
  • Movement may be in the form of a continuous rotation or a periodically alternating rotation. Such a movement causes the rows of holes to be regularly brought to coincidence and separated again.
  • the “nods” of the net, i.e., the connection sites are formed during coincidence and the meshes are formed in the other phase.
  • the synthetic nets obtained subsequently may be stretched in the longitudinal direction and/or in the transverse direction in order to impart the desired mechanical properties to the net. Processes of this type are described, for instance, in GB-A-91 11 304, GB-A-89 20 843, GB-A-85 09 498, GB-A-82 19 477 and GB-A-81 10 472.
  • the extruded synthetic nets are used for a plurality of applications such as, e.g., packages for food, protective nets for sensitive surfaces, reinforcements for geotextiles, etc.
  • Thermoplastic polymers such as, e.g., polyethylene and polypropylene are used as synthetics for the production of such nets. They can form nods by the polymer threads fusing or welding together. Such polymers are, however, not biologically degradable such that the above-mentioned products must be disposed of.
  • the net-like planar assembly according to the invention comprises threads interconnected in a net-like manner via connection sites while forming meshes, wherein the threads at least partially are fused together on the connection sites, and is characterized in that the polymer substantially is cellulose.
  • the planar assembly according to the invention may be produced by molding a moldable or spinnable mass containing the polymer by means of an extrusion die comprising two groups of spinning orifices capable of being moved relative to each other and arranged so as to enable the formation of meshes, wherein a solution of cellulose in an aqueous tertiary amine oxide is used as the moldable mass, which solution is conducted into an aqueous precipitation bath via an air gap after having left the extrusion die.
  • the invention is, thus, based on the surprising finding that spinnable solutions of cellulose in an aqueous tertiary amine oxide may be molded to net-like assemblies according to the same process and by means of the same tools as they are used for the production of nets of thermoplastics, which net-like assembly may be drawn via an air gap into a precipitation bath in which the cellulose is precipitated and the net is fixed.
  • the nod and mesh structure of the molded solution is stable to such a high degree that the cellulose solution molded to a net by means of the extrusion die may even be stretched in the air gap, stretching being feasible both in the extrusion direction and transverse thereto without tearing of the molded cellulose solution.
  • N-methylmorpholine-N-oxide is preferably used as a tertiary amine oxide.
  • the invention furthermore, relates to the use of a spinning device known per se for producing synthetic nets, for the production of net-like planar assemblies of cellulose.
  • a process for producing spinnable or moldable solutions of cellulose in an aqueous tertiary amine oxide is known, for instance, from EP-A-0 356 419. According to that publication, a suspension of cellulose in an aqueous tertiary amine oxide is initially prepared. The amine oxide contains water by up to 40% by mass. The aqueous cellulose suspension is heated and water is drawn off under decreasing pressure until the cellulose is dissolved.
  • a device and a process for producing seamless tubular films is known from WO 93/13670.
  • the cellulose solution is molded to a tube by an extrusion die having an annular extrusion gap, which tube is drawn over a cylindrical mandrel and introduced into a precipitation bath.
  • a device for the production of cellulosic tubular films by extruding a solution of cellulose in a tertiary amine oxide into a precipitant present below the device which device comprises an extrusion die having a substantially annular extrusion gap, wherein a feed duct for precipitant and a discharge duct for used precipitant are provided in the interior of the ring formed by the extrusion gap, may also be taken from WO 95/07811.
  • a spacer disc may be provided below the discharge duct in order to prevent the extruded tubular film from collapsing in the precipitation bath.
  • a preferred configuration of the planar assembly according to the invention is characterized in that a portion of the meshes is filled up. It is also possible that all of the meshes are filled up. In that case, the planar assembly according to the invention is a film having a net-like reinforcement.
  • a further configuration of the planar assembly according to the invention is characterized in that it comprises film-like sections.
  • the planar assembly obtained after cellulose precipitation preferably is washed, wherein various auxiliary substances such as, e.g., glycerine, may be introduced during or also after the washing procedure. After this, the planar assembly is dried and/or further confectionated. It has proved beneficial to introduce the auxiliary substances already prior to final drying, since the absorbability is substantially higher in that state. With some auxiliary substances such as, e.g., certain colors and plasticizers it may also be advantageous to introduce the auxiliary substances into the spinning mass already prior to molding.
  • various auxiliary substances such as, e.g., glycerine
  • FIGS. 1 and 2 Preferred embodiments of the invention will be explained in more detail by way of the annexed drawing comprising FIGS. 1 and 2.
  • FIG. 1 depicts the lower side of a spinneret used in the prior art for producing nets of thermoplastic polymers. That technique is described, for instance, in “Extrusions-Werkzeuge für Kunststoffe und Kautschuk”, 2nd Ed., pp. 207-208, Carl Hanser Verlag Kunststoff-Vienna, and in “Kunststoff-Extrudertechnik”, G. Schenkel, 2nd Ed., pp. 446-449, Carl Hanser Verlag Kunststoff, 1963. Spinnerets for the production of such nets are offered, for instance, by Netlon Limited, Blackburn, England.
  • reference numeral 1 denotes the spinneret, or extrusion tool, which comprises two circular rows 2 a , 3 a of spinning orifices or dies.
  • One row of dies 2 a is arranged on the internal edge of a circular disc 2 and the other row of dies 3 a is arranged on the external edge of a concentric circular disc 3 .
  • a spinnable cellulose solution By extruding a spinnable cellulose solution, a net-like tube will be formed if the two die rings 2 , 3 rotate or oscillate in opposite senses.
  • the rotation or oscillation of the die rings 2 , 3 is indicated by arrows.
  • the connection sites of the net are formed as two dies are each facing each other and the emerging threads are contacting each other. In doing so, these threads fuse or glue together.
  • the threads emerging from the spinneret 1 are denoted by reference numeral 4 .
  • the threads 4 move toward the viewer, the viewer looking into the net-like tube forming.
  • the connection sites on which the threads 4 have glued or fused together, i.e. the “nods” of the net, are denoted by reference numerals 4 a .
  • the areas between the threads 4 are the “meshes” of the net.
  • the cellulose solution molded in a net-like manner in the air gap is conducted into an aqueous precipitation bath for precipitating the cellulose and fixing the net structure.
  • a device of this type is schematically illustrated in section in FIG. 2.
  • FIG. 2 by 1 shows the spinneret depicted in FIG. 1, in a position in which the dies of die row 2 a are facing the dies of die row 3 a .
  • the cellulose solution is extruded through the moving rows of dies 2 a , 3 a , thereby extruding the cellulose solution in the form of a net 5 into the air space present between the surface 7 of the precipitation bath and the lower side 12 of the die 1 .
  • the net-like tube 5 is drawn off via the deflection means 10 and thereby stretched in the transport direction, i.e., in the direction toward the precipitation bath 7 .
  • the net-like tube 5 is drawn over a spacer 9 .
  • This spacer 9 has the form of a circular disc firmly connected with the die 1 by means of rods 11 .
  • the spacer 9 may comprise continuous bores 9 a for mass transfer. Instead of a disc, a ring may be provided as the spacer.
  • the net-like tube 5 is extended by the spacer 9 , this corresponding to stretching transverse to the transport direction. It is evident that such stretching transverse to the extrusion direction increases with the size of the circular spacer 9 .
  • the spacer preferably is designed such that the size of the cross sectional area may be changed. This is feasible, for instance, with a disc, or a ring, including displaceable members in a manner analogous to an apertured diaphragm, in which the displaceable parts may slide on one another, thereby enabling the external diameter to be changed.
  • a change in the size of the cross sectional area may be reached in that the spacer is comprised of an elastic ring, for instance of rubber, to which air, water or the like may be fed.
  • the diameter of the elastic ring is, thus, controllable via the medium contained in its interior.
  • a variant of this embodiment consists in that no complete ring is used, but the inner side is comprised of a solid part of, e.g., steel or plastics and an elastic part is attached to the same.
  • Another embodiment consists in a semi-shell, optionally comprised of segments, whose fixed point is displaceable, thereby changing the external diameter (umbrella principle).
  • the cellulose solution can be molded to a film having net-like reinforcements or to a net having filled-up meshes.
  • this planar assembly can be produced by a device as illustrated in FIG. 2 provided a gap for extruding the film portion between the meshes is provided between die rows 2 a and 3 a .
  • a supply duct and a discharge duct must be provided in order to get precipitant 8 into the interior of the tube and again out of it.
  • Such supply and discharge ducts are known for instance from WO 95/07811 to Applicant in a spinning device for producing cellulosic films.
  • Stretching transverse to the extrusion direction may be obtained by means of a spacer disc 9 .
  • transverse stretching may be obtained also by means of a gas pressure in the interior of the film tube 5 .
  • the blowing die principle is known, for instance, from EP-A -0 662 283.
  • a spinnable cellulose solution may be processed not only to tubular nets, but also to flat nets.
  • various embodiments are feasible.
  • the process described above in respect of an annular die may be realized also with a flat die.
  • the two die halves will perform an oscillating movement relative to each other by moving either one or both of the die halves, thereby causing a relative movement of the two die halves.
  • the dies are formed by slotted die discs immediately consecutely arranged and performing relatively oscillating movements, wherein at least the slot of one die disc has the form of a line with multiple directional changes and wherein the slot lines of both die discs extend in a manner so as to brush over each other along their total extension during their relative movement, thereby constantly overlying each other in a number of points.
  • Such die arrangements are described, for instance, in “Kunstscher”, Vol. 52, No. 8, pp. 492-494, 1962 and allow for the production of planar assemblies according to the invention in which a portion of the meshes are filled up. It is, furthermore, possible to produce planar assemblies having film-like sections.
  • planar assembly it has, furthermore, proved suitable to dry the planar assembly according to the invention after washing while preventing shrinking at the same time.
  • Cylinder drying, hot-air drying, drying by means of infrared radiation and microwaves and suction cylinder drying are particularly suitable drying procedures.
  • the planar assembly may be prevented from shrinking, for instance, in a simple manner by laid-on strips following on.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Laminated Bodies (AREA)
  • Filtering Materials (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Multicomponent Fibers (AREA)
US10/185,362 1997-03-21 2002-06-27 Net-like planar polymer assembly Abandoned US20020168906A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/185,362 US20020168906A1 (en) 1997-03-21 2002-06-27 Net-like planar polymer assembly

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
ATA496/97 1997-03-21
AT0049697A AT404474B (de) 1997-03-21 1997-03-21 Netzartiges flächengebilde aus einem polymer
PCT/AT1998/000073 WO1998042902A2 (fr) 1997-03-21 1998-03-20 Materiau plat en treillis constitue de polymere
US19302898A 1998-11-16 1998-11-16
US10/185,362 US20020168906A1 (en) 1997-03-21 2002-06-27 Net-like planar polymer assembly

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US19302898A Continuation 1997-03-21 1998-11-16

Publications (1)

Publication Number Publication Date
US20020168906A1 true US20020168906A1 (en) 2002-11-14

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US10/185,362 Abandoned US20020168906A1 (en) 1997-03-21 2002-06-27 Net-like planar polymer assembly

Country Status (12)

Country Link
US (1) US20020168906A1 (fr)
EP (1) EP0909235B1 (fr)
JP (1) JP2001516298A (fr)
CN (1) CN1229383A (fr)
AT (1) AT404474B (fr)
AU (1) AU731605B2 (fr)
BR (1) BR9806288A (fr)
CA (1) CA2255636A1 (fr)
DE (1) DE59809915D1 (fr)
ID (1) ID20423A (fr)
NO (1) NO313387B1 (fr)
WO (1) WO1998042902A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090022775A1 (en) * 2006-01-24 2009-01-22 Basf Se Polymer backbone for producing artificial tissue
US20210164138A1 (en) * 2018-07-31 2021-06-03 Lenzing Aktiengesellschaft Nonwoven material, use of the nonwoven material, and wiping cloth, drying cloth and face mask containing the nonwoven material
CN113529282A (zh) * 2021-07-26 2021-10-22 大连塑研塑料科技开发有限公司 立体丝垫机头模板交叉网格化往复运动方法和装置

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Publication number Priority date Publication date Assignee Title
EP2472005A1 (fr) 2010-12-30 2012-07-04 Hermann Thal Dispositif et procédé de fabrication et de pose d'éléments tendeurs pour ossatures porteuses de ponts
CN111516250A (zh) * 2020-04-30 2020-08-11 辛集市旭远新材料科技有限公司 一种复合塑料薄膜吹膜机以及制备方法

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DE1109131B (de) * 1959-08-27 1961-06-22 Norddeutsche Seekabelwerke Ag Strangpresse zum Herstellen eines Netzes aus thermoplastischem Kunststoff
GB1122451A (en) * 1965-01-21 1968-08-07 Dunlop Rubber Co Improvements in and relating to the manufacture of net-like fabrics of plastic materials
US3557271A (en) * 1967-12-11 1971-01-19 Fmc Corp Manufacture of net-like materials by extrusion
FR2131842A6 (en) * 1971-03-30 1972-11-17 Labarre M Mesh extrusion die - using a shear cutter instead of a stamp to reduce tool wear
US5451364A (en) * 1992-01-17 1995-09-19 Viskase Corporation Cellulose food casing manufacturing method
DE4308524C1 (de) * 1992-06-16 1994-09-22 Thueringisches Inst Textil Verfahren zur Herstellung von Cellulosefasern und -filamenten nach dem Trocken-Naßextrusionsverfahren

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090022775A1 (en) * 2006-01-24 2009-01-22 Basf Se Polymer backbone for producing artificial tissue
US20210164138A1 (en) * 2018-07-31 2021-06-03 Lenzing Aktiengesellschaft Nonwoven material, use of the nonwoven material, and wiping cloth, drying cloth and face mask containing the nonwoven material
US20240068140A1 (en) * 2018-07-31 2024-02-29 Lenzing Aktiengesellschaft Nonwoven material, use of the nonwoven material, and wiping cloth, dryer sheet and face mask containing the nonwoven material
US12467169B2 (en) * 2018-07-31 2025-11-11 Lenzing Aktiengesellschaft Nonwoven material, use of the nonwoven material, and wiping cloth, dryer sheet and face mask containing the nonwoven material
CN113529282A (zh) * 2021-07-26 2021-10-22 大连塑研塑料科技开发有限公司 立体丝垫机头模板交叉网格化往复运动方法和装置
US12577713B2 (en) 2021-07-26 2026-03-17 Dalian Plastics Research Institute Co., Ltd. Method for producing three-dimensional filament mats by machine head and mould plate cross- gridding reciprocating motion and apparatus thereof

Also Published As

Publication number Publication date
AT404474B (de) 1998-11-25
CA2255636A1 (fr) 1998-10-01
ATA49697A (de) 1998-04-15
DE59809915D1 (de) 2003-11-20
NO985398D0 (no) 1998-11-20
NO313387B1 (no) 2002-09-23
WO1998042902A3 (fr) 1999-01-14
JP2001516298A (ja) 2001-09-25
EP0909235B1 (fr) 2003-10-15
AU731605B2 (en) 2001-04-05
NO985398L (no) 1998-11-20
AU6384998A (en) 1998-10-20
CN1229383A (zh) 1999-09-22
EP0909235A2 (fr) 1999-04-21
WO1998042902A2 (fr) 1998-10-01
BR9806288A (pt) 1999-11-09
ID20423A (id) 1998-12-10

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